Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Main Body ECU Vehicle Information Reading/Writing Process Malfunction (B15F6)
DESCRIPTION
This DTC is stored when items controlled by the main body ECU (multiplex network body ECU) cannot be customized via the audio and visual system vehicle customization screen.
HINT:
The main body ECU (multiplex network body ECU) controls the items for the following systems that are customizable via the multi-display assembly screen:
- Power door lock control system
- Wireless door lock control system
- Lighting system (for Interior)
- Lighting system (for Exterior)
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B15F6 | Main Body ECU Vehicle Information Reading/Writing Process Malfunction | Main body ECU (multiplex network body ECU) vehicle setting processing malfunction |
|
CAUTION / NOTICE / HINT
NOTICE:
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Audio and Visual System.
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PROCEDURE
| 1. | CHECK CAN COMMUNICATION SYSTEM |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here
OK:
CAN communication DTCs are not output.
| NG |  | GO TO CAN COMMUNICATION SYSTEM |
|
| 2. | CHECK POWER DOOR LOCK CONTROL SYSTEM |
(a) Check if the power door lock control system is malfunctioning.
Click here
HINT:
Customization may not be possible depending on the malfunction in the power door lock control system.
OK:
No malfunctions are present in the power door lock control system.
| NG | | GO TO POWER DOOR LOCK CONTROL SYSTEM |
|
| 3. | CHECK WIRELESS DOOR LOCK CONTROL SYSTEM |
(a) Check if the wireless door lock control system is malfunctioning.
Click here
HINT:
Customization may not be possible depending on the malfunction in the wireless door lock control system.
OK:
No malfunctions are present in the wireless door lock control system.
| NG | | GO TO WIRELESS DOOR LOCK CONTROL SYSTEM |
|
| 4. | CHECK LIGHTING SYSTEM (for Interior) |
(a) Check if the lighting system (for Interior) is malfunctioning.
Click here
HINT:
Customization may not be possible depending on the malfunction in the lighting system (for Interior).
OK:
No malfunctions are present in the lighting system (for Interior).
| NG | | GO TO LIGHTING SYSTEM (for Interior) |
|
| 5. | CHECK LIGHTING SYSTEM (for Exterior) |
(a) Check if the lighting system (for Exterior) is malfunctioning.
Click here
HINT:
Customization may not be possible depending on the malfunction in the lighting system (for Exterior).
OK:
No malfunctions are present in the lighting system (for Exterior).
| NG | | GO TO LIGHTING SYSTEM (for Exterior) |
|
| 6. | CLEAR DTC |
(a) Clear the DTCs.
Body Electrical > Navigation System > Clear DTCs
|
| 7. | CHECK FOR DTC |
(a) Recheck for DTCs and check that no DTCs are output.
Body Electrical > Navigation System > Trouble Codes| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| A | | END |
| B | | REPLACE RADIO RECEIVER ASSEMBLY |
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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